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Nasty Fly Pest Can Wreak Havoc On Orchids
The Cattleya fly is counted among the most damaging of creatures that can attack your orchids.. In fact, this pest is intimately associated with orchids rather than any other kind of plant, as you might gather from its scientific name, Eurytoma orchidearum.
Cattleya flies deposit their eggs in the orchid plant's young growths. The eggs hatch, with the nymphs (or maggots) going to work right away, feeding voraciously. These nymphs soon swell to a huge size inside the orchid's bulbs. One signal that these maggots are doing their damage is that the bulbs themselves will swell becoming club-shaped at the location where the pests are eating.
Finally, the nymphs develp into adult flies, which eat their way to the outside by chewing through the flesh of the bulbs. Adult flies are deep black, have transparent wings, and are about a quarter inch in length. Sadly, by the time you see them, it could possibly be too late to salvage many of your orchid plants. Nonetheless, you should try to kill all the flies you can before they get a chance to inject their eggs into your remaining healthy plants.
If you have plants that are already infected, the best course is to slice away any bulbs that are seen to be swelling more than seems natural. Then simply drop the nymph or maggot into a container of water to drown it. It is discouraging to have to slice away a plant's promising young growth, but it is better than leaving your other plants exposed to attack by the pest. With luck, the plant that you had to do "surgery" on will grow a new bulb in place of the old one.
There's actually a bit of good news regarding the Cattleya fly. They are actually not very common, and most orchid cultivators will never encounter them. Regardless, it is just good practice to carefully examine every new orchid for the signs of these flies and their maggots. Besides looking out for unusually enlarged bulbs where the fly's nymphs might be feasting, inspect for minute holes where a female fly's ovipositor might have inserted eggs into the orchid. Absent such signs, you probably do not have a Cattleya fly problem.
To be truly successful growing orchids it is important to understand how to deal with all of the potential threats to your plants, including insects. It is not as hard to grow orchids as many people would have it, if you ground yourself in basic knowledge of these exciting plants.
The most up-to-date guide to today's orchid growing, many growers agree, is Orchid Care Expert by a Mr. Nigel Howard, which can be downloaded from the Internet. Howard's delightful guide will provide a full immersion in the subject. Also, be sure to visit the Orchid Secrets site, which features an ever-expanding library of information on many topics of orchid care.
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Frequently Asked Questions...
ITS DAY 20 OF MY CHICKEN EGGS INCUBATION AND NOTHING YET!?
i no they are supposed to hatch on day 21 not 20 but i heard that you should hear chirping and see the egg shaking on day 20. is this true. if so why arent my eggs. i did everything right.
Answer:
Just because you did everything right, doesn't mean they cannot die. Something could have happen while you were away that you never knew about. Sorry.
-- PA



































